That'll teach her to linger in the garden when you are bringing the dogs in.

Don't worry about it. Dogs like it outside. She may have been quite comfortable.

I do the opposite. I have to shut the x-pen to the doggy door so that I can get everyone done in the morning, and then I have to open that pen so the dog can go outside and pee if he needs to. I have forgotten to reopen his pen and have come back hours later to find him sitting there cross-legged waiting to pee.